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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 240 |
| 3 | 88 |
| 4 | 4068 |
| 5 | 51213 |
| 6 | 480343 |
| 7 | 10823065 |
| 8 | 161922923 |
| 9 | 2400592063 |
| 10 | 44083556765 |
| 11 | 752293726555 |
| 12 | 11956613279238 |
| 13 | 210428029078777 |
| 14 | 3622125456608840 |
| 15 | 59808591189923678 |
| 16 | 1031998208853433156 |
| 17 | 17707660917785401664 |
[0,240,88,4068,51213,480343,10823065,161922923, 2400592063,44083556765,752293726555, 11956613279238,210428029078777,3622125456608840, 59808591189923678,1031998208853433156, 17707660917785401664] |